It will no longer be an unfaithful city, but I guess the understanding is lost on you. Take note of verse 23 since you bolded it, maybe it will shed some light on things for you.
Revelation 21:23 And the city has no need of sun or moon to shine on it, for the glory of God gives it light, and its lamp is the Lamb.24 By its light will the nations walk, and the kings of the earth will bring their glory into it,
Since Jesus will be reigning there for the millennium, no lamp is necessary. And just in case you don't get this part, He does not reign from Rome.
Yeah, as tricky as the earth being destroyed by water once before and people living on it afterward, who would have thought that was possible?
I guess Paul was mistaken then when he wrote the day of the Lord is the day in which Jesus comes back and gathers people then?
The idea is that I point you in the right direction, not post entire chapters. If you had bothered to read them, then you would see that this is precisely speaking to the end times. Here is one such example.
Isaiah 1:18 “Come now, let us reason together, says the Lord:
though your sins are like scarlet,
they shall be as white as snow;
though they are red like crimson,
they shall become like wool.
19 If you are willing and obedient,
you shall eat the good of the land;
20 but if you refuse and rebel,
you shall be eaten by the sword;
for the mouth of the Lord has spoken.”
This doesn't occur until they look upon the one they pierced, at least for those knowledgeable regarding what the prophets said. What is clear, is that you still continue to avoid the real issue at hand, which dismantles your entire theory. You cannot put the blood of the righteous and the prophets on any other city when Jesus Himself already proclaimed that blood on Jerusalem, it is just that simple.